Reinforcement of plaster with metal mesh stb. What is a reinforcing mesh for plaster? Metal mesh mount

reinforced solutions. Solutions reinforced with fibrous substances are prepared for plastering on a metal mesh. Reinforced plaster mortars better fill the cells of the mesh and as a result a continuous surface is obtained, on which subsequent layers of mortar can be applied in various ways. I use woolen and synthetic waste as fibrous substances.

The composition of cement mortars is prepared in a ratio of 1: 3. Cement-lime mortars 1: 0.1: 3 and 1: 0.25: 3. 0.5 ... 1 hour of a reinforcing additive is introduced into the solutions. First, the additive is mixed with a dry cement-sand mixture, then the mixture is mixed with water or lime milk, or the additive is first mixed with lime milk.

Solutions for heat-insulating plasters. Heat-insulating plasters, that is, plasters with low thermal conductivity, are obtained from mortars with light aggregates, such as perlite sand. The compositions of these solutions and methods of their preparation do not differ from the compositions and methods of solutions with sand filler. It only slightly increases the mixing time.

For plastering dry rooms use a solution of 1 part of cement and 3 parts of sawdust soaked in milk of lime. Sometimes 1 part of natural or slag sand is added to this solution.

For plastering rooms with high humidity, solutions of the following composition are used: cement - 1 hour, milk of lime - 0.5 hours, sand 3 ... 4 hours, asbestos - 1 hour.

Solutions for acoustic plasters. In order to reduce noise in the room, you can plaster the walls with acoustic solutions. Light solutions with a density of 600 ... 1200 kg / m 3 help well in this, the filler in which are porous sands with a particle size of 3 ... 5 mm, obtained from slag, pumice, expanded perlite, expanded clay, etc.

Some enterprises produce gypsum-perlite mixtures used for the installation of heat-insulating and acoustic plasters. The composition of such mixtures includes expanded perlite sand, gypsum binder and retarder.

For fire-retardant plasters, mineral wool granules are additionally added to the dry mix.

Plaster materials.

Special plasters.

The consumption of the BS preparation in solutions of brand up to 15 is 2 - 3 kg per m 3 of solution, and in solutions of brand 30 - 1.5 - 2 kg. On average, the BS preparation reduces the consumption of lime to 400 kg or cement to 75 kg per 1 m 3 of solution. Introduced directly into the mortar mixer. It is not produced by the industry, it is prepared in the conditions of a construction site (table 20).

Facade finishing is one of the most important construction operations. Exterior wall cladding is exposed to precipitation, freeze/freeze cycles and harsh ultraviolet rays. Such difficult operating conditions put forward increased demands on the quality of the finish. Eliminating defects on facade walls is very expensive and time consuming. We will have to mount scaffolding, wait for good weather, remove construction debris. To prevent the occurrence of unpleasant situations, you need to take all measures to prevent them.

Finishing of front walls is carried out by various materials and technologies. The reinforcing stack is used in two cases.

To improve the performance of the plaster layer. For such purposes, it is better to use a metal mesh made of galvanized wire.

All-metal mesh

The fact is that among the many advantages of foam blocks, it is necessary to pay attention to one very significant drawback - low physical strength. Another problem is that concrete blocks begin to crumble when freezing / freezing in conditions of high specific humidity. As a result, cement plaster begins to peel off with all the negative consequences.

The reinforcing mesh allows the plaster to adhere to the wall surface. The talk that such a grid should be used with a large thickness of the plaster, that due to this, cracks do not appear on the plaster, have only a partial confirmation. First, there are simpler and cheaper methods to prevent cracks from appearing in thick plaster. The simplest is to throw the solution in a thin layer in several steps. Secondly, it is possible to increase the adhesion of the mortar with the facade wall due to a slight increase in the amount of cement in the mortar. If this is not enough, then a spray of cement milk is done.

To protect the insulation of facade walls from destruction. The reinforcing facade mesh is used during the finishing of foam insulation boards.

Not to improve the fixation of the adhesive to the surface of the expanded polystyrene and to prevent cracks, as some "sofa" builders write, but for mechanical protection.

Why do we say so? The surface of expanded polystyrene is protected from the negative effects of ultraviolet rays and, oddly enough, from damage by birds. For some unknown reason, birds are very fond of pecking foam, if left unprotected, then soon many large and small depressions will appear on the surface. Conclusion - polystyrene foam must be closed. The cheapest and most reliable method is to use glue.

By the way, the advertising characteristics of manufacturers of plastic reinforcing meshes “they are not afraid of UV” do not affect their actual performance in any way. The fact is that even the thinnest layer of glue or other cement-sand mixture does not completely transmit ultraviolet rays. Why should a consumer pay for properties they don't need? And one more nuance. Most often, builders fix the reinforcing mesh on the entire wall. We think that this is done either out of ignorance of physical properties, or a desire to earn more. We recommend using a reinforcing mesh to a height of 1.5–2.0 meters, there is no need to go higher. No one will damage the finish screed on foam plastic so high. Mechanical damage occurs due to various impacts, careless chores near the facade wall, etc.

Types of facade reinforcing meshes

Facade reinforcing meshes are made of galvanized wire or polymers. The former are used for facade plaster, and the latter for universal use.

Modern facade mesh

Metal mesh fixing technology

Metal meshes are used only for cement-sand facade plasters, foam insulation is not finished with them. The reason is the small thickness of the screed on foam boards. And the metal mesh cannot be aligned with such accuracy, it must be pressed with a thick layer of mortar. The metal facade reinforcing mesh is able to withstand great efforts, it is used if it is necessary to apply a thick layer of plaster on an uneven base.

The fixation algorithm has several features, the implementation of which guarantees the expected effect. You can lay the grid in both vertical and horizontal stripes. For the strength of the plaster, this does not matter, decide for yourself how it is more convenient for you to work. How to properly fix the metal mesh to the facade wall?

Step 1. Take the dimensions of the wall, cut the metal mesh along them. Select the cutting tool according to the wire diameter. Universal tool - scissors for metal.

If they are not there, then a thin mesh with a wire diameter of up to 0.8 mm can be cut with ordinary scissors. True, after that these scissors will have to be sharpened, they will no longer cut the paper.

Step 2 The metal mesh can be fixed with dowels, the length of the hardware should provide a strong fixation. For facade walls made of foam blocks, ordinary nails 80–90 mm long can be used. They are easily hammered into blocks with an ordinary hammer, working with them is much faster and easier. Nails are much cheaper than dowels, and the quality of fixation is no different. Use dowels only on brick or concrete facade walls.

Step 3 Using an electric drill with a hammer drill, drill the first hole for the mesh. The depth of the holes should be several centimeters greater than the length of the plastic part. Otherwise, it is impossible to insert the dowel to the desired depth - the hole is slightly filled with brick chips during drilling and reduces its effective depth. It is difficult to remove it from there, it is better to drill more.

Important. The height of the protruding part of the dowels should not exceed the thickness of the plaster. Follow this parameter on the entire area of ​​​​the facade wall so that during plastering you do not have to adjust the dowels.

Step 4 Drill holes in one line at a distance of about fifty centimeters, hang a net on each dowel. Pull it a little, do not allow large irregularities. The position of the line does not matter, it can be vertical or horizontal, depending on the method of attaching the reinforcing metal mesh.

Step 5 Check the position of the opposite edge of the grid, if it is uneven, then move the grid to adjacent cells.

Plaster mesh fastening - scheme

Step 6 Everything is normal - continue to fix the grid, install the dowels in a checkerboard pattern. Most metal meshes are one meter wide, you will need three rows of hardware to fix them.

Important. In places where two rolls overlap, install the dowels at a distance of approximately 10 cm from the edge. Two strips of reinforcing mesh will be hung on these dowels at the same time.

Step 7 In places of window and door openings, the mesh is cut to size. But there is nothing to worry about if you do not cut it off, but simply bend it. Just make sure that the edges of the bent sections do not protrude beyond the thickness of the plaster layer.

During the plastering of such a facade wall, the mortar must be applied in several stages. For the first time, the mass should be a little thicker than for the final alignment. Specific values ​​​​depend on several indicators and are determined individually, taking into account the practical experience of the master. The consistency of the mortar is influenced by the weather, the ability of the facade walls to absorb moisture, the linearity of the wall, the maximum parameters of the irregularities, etc.

Step-by-step instructions for fixing plastic meshes

The durability of its operation largely depends on the correct implementation of the recommendations for installing a plastic reinforcing mesh on a foam insulation. In all cases, do not rush, work carefully. We have already mentioned that there is no need to reinforce the entire wall in height, it is enough to protect only the lower vulnerable area. But these are our recommendations, if in doubt - protect the entire surface of the facade wall.

Any brand of glue is suitable for gluing the mesh. Read the instructions, it should have high adhesion with plastic materials. In most cases, a final layer of adhesive several millimeters thick is applied over the plastic reinforcing mesh. The final coating is done with facade paints or a thin layer of decorative plaster.

Step 1. Examine the surface of the plates. If they were fixed with dowels, then completely drown the caps and close the recesses. At the same time, you can close the slots, but this is not necessary. The fact is that the slots will automatically close during the application of the first layer.

Step 2 On the wall, draw a horizontal line along the height of the reinforcing layer. It will help to monitor the height of the application of glue. A thin layer of material dries quickly, and this not only causes an increase in material consumption, but also negatively affects the final leveling of the layer for painting.

Step 3 Prepare the adhesive according to the manufacturer's instructions. Always fill the container with water first, and then add the dry mix. This technology will greatly simplify the mixing process. Mixing can be done manually with a trowel or with a mixing attachment to an electric drill.

The second method is not only easier, but also more efficient. You need to mix for several minutes, and then leave the mixture to stand for another 5-6 minutes. During this time, the moisture will be evenly distributed throughout the volume, the smallest dry lumps of glue will completely disappear.

Step 4 The glue is applied to the wall with a spatula, the longer it is, the smoother the surface is in the end. Professionals work with spatulas up to 70 cm in size, beginners can use shorter ones at first.

Practical advice. If you are just learning how to apply glue to the surface, then it is better to immediately get used to working with both hands. One gets tired - connect the second hand. Believe me, it is not so difficult, you just need to show a little endurance and patience.

Apply glue to the spatula with a trowel in the center of the tool. The quantity will be determined empirically. While applying the layer, hold the spatula at an angle to the foam plates, press with medium force. Achieve a layer thickness of approximately 2-3 millimeters. Do not prepare a large amount of surface at once; for beginners, two meters per dyne is enough. If you do not have time to fix the mesh, the glue will harden, you will have to remove the old layer and make a new one.

Step 5 Try on the location of the plastic reinforcing mesh. If it does not fit into the window opening, trim the material.

Step 6 Glue one end of the grid, align it horizontally to the length of the prepared section of the wall. Make sure that the mesh lies flat without distortions and bends, be guided by a pre-drawn line on the foam.

Practical advice. The mesh should overlap with about ten centimeters. You can find recommendations not to smear the place of overlap of one line with glue, but to do it simultaneously for two rows. We do not recommend doing this, it only complicates the work. Glue the first row of mesh immediately across the entire width, including the overlap. The second line will be glued on top of the freshly applied glue. This method simplifies mesh fixation and has a positive effect on quality.

Step 7 With your hand, press the mesh to fresh glue in several places, check its position again.

Step 8 With a spatula, begin to press the mesh to the surface of the insulation. Make sure that the glue of the first layer protrudes over the entire surface and evenly covers the mesh cells on the front side. If there are places with insufficient thickness of the adhesive, apply it again over the reinforcing mesh. Such omissions may appear in inexperienced craftsmen. Over time, you will learn to determine the optimal thickness of the glue by eye and there will be no more gaps. Smear excess solution on free surfaces. You should not try to immediately make the surface perfectly flat, but you need to strive for such a result.

Step 9 Give the glue time to dry. It is better to leave it overnight, it is recommended to finish the surface grouting the next day.

That's the whole technology, the surface of the facade wall is prepared for painting or finishing with other materials. We remind you once again that plastic reinforcing mesh on insulated facades is used not to prevent cracks on the adhesive surface, but to prevent mechanical damage to the foam. Keep this in mind when making a decision.

Facade mesh for building protection

Compliance with safety regulations during construction work on multi-storey buildings is one of the main requirements for all developers. This is especially true of objects being built within cities. The facade mesh is fixed on the scaffolding and prevents construction debris and tools from falling onto pedestrian walkways. For such purposes, the cheapest of the plastic reinforcing meshes is used; after dismantling, it is suitable for direct use.

"Emerald" - a new grid for scaffolding

Question answer

Is it possible to repair exfoliated sections with a reinforcing facade mesh? It is possible, but it is better not to allow such situations. Unfortunately, in most cases, delaminations appear several months or years after finishing the insulated facade walls.

How is the repair done?

1. Revise the delaminated area. By hand, check the strength of the fixation of the mesh next to the exfoliated area. Prepare materials: glue and a piece of plastic reinforcing mesh. If the facade walls are painted, then you need to have the appropriate paint.
2. Pull the peeled mesh towards you and cut it around the perimeter with a sharp mounting knife. Be very careful not to damage the foam. If during cutting the sect continues to flake off - excellent. In this way, you remove the entire problem area; in any case, it would exfoliate over time.
3. Cut out a new mesh for the patch, the size should be slightly larger than the freed area for the overlap.
4. Remove a layer of old glue from the surface of the foam.
5. With a spatula, carefully remove the top layer of glue from the surface of the remaining mesh to the width of the new overlap. Apply the first layer of glue, sink the mesh into it and apply the second layer of glue.
6. After it dries, smooth it out. Pay special attention to the connection point. It should be as even as possible without sudden changes in height.

How does the quality of a plastic mesh depend on its price? Almost nothing. When choosing a grid, pay attention to the thickness of the canvas and the size of the grid cells. All other characteristics are nothing more than advertising ploys of manufacturers.

What is better than a plastic anti-corrosion coating of a metal reinforced mesh from galvanizing? Nothing, in addition, the price of such a mesh is higher than with galvanized wire. You need to know that the adhesion of all cement mortars to plastics is much lower than to galvanized surfaces. As for the service life and bearing capacity, these indicators are absolutely identical.

Is it possible to do without reinforcing mesh when plastering uneven facade walls? Not only possible, but necessary. We have already talked about simpler and more efficient methods of working with such surfaces. Reinforcement with metal mesh is used not to prevent cracks, but to increase the bearing capacity of cement-sand mortars. It is needed during the floor screed. One more nuance. The parameters of linear thermal expansions of the metal and the solution are significantly different. This means that microcracks will definitely appear in the places where cement and metal mesh adhere, because outdoor temperatures fluctuate significantly. There are no such fluctuations in enclosed spaces.

Should reinforcing mesh be used on the plinth surfaces of facade walls? Use this technology only for foam-insulated plinths. In all other cases, it is not needed.

Photo - a pie made of insulation and mesh for reinforcement

How much does the cost of finishing facade walls increase due to the use of reinforcing mesh? The cost of finishing increases by no more than 3-5%. But if we take into account possible repairs due to mechanical damage to the foam, then a slight increase in cost is fully justified.

Video - How to glue reinforcing mesh

Repairs are often accompanied by leveling the walls with plaster. In addition, it also improves thermal insulation, reduces the level of extraneous noise in the finished room. Surfaces plastered with decorative mixtures have a beautiful appearance. When the irregularities are small and there are practically no defects, then the solution is often applied simply to the prepared base. If the deviations are large, there are cracks, then a plaster mesh is necessarily used in the work to reinforce the walls. It is represented by a wide range, which allows you to choose products for certain operating conditions.

Scope of use

Reinforcing mesh for wall plastering has replaced the old methods (shingles, stuffed nails) used to improve the adhesion of the finishing layer to the base surface. It is made from materials with different properties. There are products from a large number of different manufacturers on the market.

It is used both for internal, and external works. It is the basis of the leveling coating. The latter becomes stronger and more durable as a result. The mesh must be used to avoid the appearance of delamination, cracking, or to stop the process of crack growth itself.

The construction mesh for plaster is used to qualitatively prepare the base for further activities to decorate work surfaces. With proper installation and further plastering, it prolongs the life of the finish and helps maintain the integrity of the partitions.

Types of plaster mesh

Reinforced mesh for plaster differs in the materials used for its production, the structure and size of the cells, and the methods of creation. According to the first criterion, the following varieties are distinguished:

• plastic;

Products have all the advantages and disadvantages of the materials used for their production.

A more detailed classification is presented in the table below.

The existing assortment allows you to choose high-quality products, taking into account all requirements. The use of material that meets the existing conditions determines the durability of the finish.

Choice of working material

The main determining factor in the selection of material is its suitability for specific conditions, so the mesh for wall plastering is selected taking into account the following number of factors:

• the required thickness of the created finishing coating;
• the type of plaster mixture that is used;
• type of base (concrete, wood, brick, porous materials, stone);
• external conditions in which the formed plaster layer will be located: outside the building, inside, or in unheated, damp rooms.

Plaster with the following types of mixtures:

• cement-lime;
• plaster;
• cement-sand;
• clay and others.

Various additives are often added to such compositions. Together with the main components, they have a certain level of chemical activity. This determines the degree of their influence on different materials from which the meshes for reinforcement are made.

Taking into account the above provisions, the main recommendations for choosing a mesh for plastering walls are as follows:

• fiberglass products are recommended to be used when the thickness of the created plaster layer is up to 3 cm, when there are also recesses, cracks in order to stop the expansion of old ones and the formation of new ones;
• if the height of the formed coating exceeds 3 cm, then a more appropriate option would be from metal: it is able to withstand the weight of the finish and not peel off at the same time;
• plastic products are best used for thin gypsum mortars, and, for example, cement-sand compositions corrode such reinforcing material over time;
• when using mixtures based on clay, also when there are significant irregularities on the surface of the base, metal options are relevant;
• plastic sheets with small cell sizes (for example, 0.2-0.3 cm) are used during finishing puttying;
• fiberglass or galvanized (ordinary metal ones are not suitable), products are a good way to reinforce rooms with high humidity;
• when there is a need to plaster the oven with a cement-clay mortar, then you can use a chain-link, and with a thin layer of it - fiberglass;
• steel products are suitable for joint use with compounds containing cement;
• during the plastering work on the exterior walls of the house, material with cells of 3 * 3 cm is usually used, and their larger sizes are selected to tighten the surface;
• for internal work, they mainly use material in rolls, and for external work, in the form of sections.

When the height of the created layer of plaster does not exceed 2 cm, then reinforcement can be omitted. Following the above recommendations will allow you to choose the most practical material.

Features of mounting different types of mesh

Metal mesh for plaster, fiberglass or plastic, can be mounted using different methods. The choice of fixing option is determined by the composition of the working mixture, the material from which the mesh is made, and the plastering technique used. Fix with:

• self-tapping screws or dowel-nails, screws.

The first layer of plaster for leveling the walls is reinforced by pressing the mesh into the mortar of the required thickness applied to the surface.

The best way to create a finishing coating (covering or decor) is to fix the adhesive web on a dry base with special fasteners.

When the area of ​​​​the area to be trimmed is small, then you can use the working mixture for fixing, applying it pointwise.

It is enough to simply fix the paint grid with a thin layer of mortar.

The fiberglass cloth is mounted according to the following optimal algorithm:

• perform markup for the installation of beacons;
• holes are drilled along it, into which dowels are then inserted;
• set the screw heads according to the level;
• apply the solution to an area equal to the width of the canvas used;
• a grid is immediately applied to the plaster, threading the caps from the screws through it;
• throw the mixture further;
• overlap (10 cm) fix the next strip;
• so continue until the entire room is reinforced;
• install beacons.

The solution should be smoothed over the canvas evenly, starting from the middle of the strip, while moving towards its edges. When creating a thin layer, fixing the fiberglass to the staples with further application of putty justifies itself.

The stucco metal mesh is fixed in the following sequence:

• cleaned of the lubricant composition by rinsing with water or wiping with a damp cloth;
• with scissors for metal, cut the canvas into pieces of the desired size;
• every 25-30 cm holes are drilled with a diameter of 6 mm for dowels (about 3 mm deeper than the length of the plastic part of the fastener), insert them;
• using screws and mounting tape - fix the material on the surface;
• the following fragments are laid with an overlap of 10 cm;
• install beacons.

The minimum height of the created coating depends on the thickness of the mesh wire. Metal products additionally strengthen the base, and fiberglass products reinforce the plaster with a mesh.

Methods for fixing the plaster mesh are discussed in detail in the video below.

Installation of facade fiberglass material is shown in the video below.

Strengthening the base, increasing the strength and reliability of the plaster finish - all this is ensured by the creation of an adhesive layer. It is formed using different materials.

For the correct implementation of the reinforcement of the walls with a mesh, it is necessary to take into account the type of mortar used, the place of installation (outside or inside the building), the expected height of the coating. It is also required to use suitable mounting technology. Compliance with the above conditions allows you to plaster walls or ceilings with high quality, minimize the possibility of cracking, and not be afraid of shrinkage at home.

Grid for plaster - the key to the durability of the work performed. Wall plastering is a traditional leveling and finishing technology. And not only - plaster is also performed for the purpose of fire protection and sound insulation, during repairs, as a decorative finishing layer or as a preparation for finishing ... but most often gypsum, cement-sand and lime plaster is needed, just as a finish. The use of mesh for plaster is an important condition.

Reinforcement of products from cement-sand mortars is a condition for their long-term operation, and the plaster layer is no exception. In order for the plaster layer to be durable and serve for a long time, it is reinforced by placing a mesh of plastic, fiberglass, steel inside, there are a lot of types and materials of meshes. And you need to choose a grid based on some conditions.

The use of plaster mesh

Although the technology is simple - a grid must be placed approximately in the middle of the solution layer, but there are some nuances. Two factors are important - the thickness of the plaster layer and the material of the surface on which it is applied. The most difficult cases are a thick layer of plaster - more than two centimeters, and a finishing surface that does not have good adhesion to cement-sand mortars, that is, metals, wood, and some types of panels. If either or both of these factors are present, then it is important not only to ensure that the plaster adheres to the wall, the reinforcing mesh must also be firmly fixed. It is not enough just to lay it in the plaster layer - the result of such work can be a solid layer of plaster that has lagged behind the wall in a single layer.

Fasteners for plaster mesh

The types of fasteners for meshes also depend on the material of the walls - to concrete and brick, although they have good adhesion, the meshes are fastened with dowels using large washers, to wooden walls - sometimes with nails, but it is better to mount on self-tapping screws. If you need to plaster a metal surface, choose one of the types of steel meshes, and then fix it by welding. The thicker the layer of the applied solution is required, the more powerful the mesh is needed, sometimes a chain-link is used. It is clear that thin woven metal meshes are not suitable in this case.

Inexpensive and common meshes made of fiberglass and polypropylene are used for plasters that are not extreme. The thickness of the applied layer is 15-20 mm, plus the surface material, which is combined with plaster solutions - and you can work without fasteners.

Surface preparation for plaster

Surface preparation for plaster is very important. It does not matter whether the layer is reinforced or not - cleaning, dedusting, removing all old peeling finishes, as well as processing with penetrating primers or primers is a must. A properly prepared surface with good adhesion, a smooth wall that does not require a thick layer for leveling - if all these conditions are met, then a thin, strong and elastic mesh should simply be correctly placed in the body of the plaster layer. First, a layer of mortar of about 5 mm is applied to the wall, then the mesh is pressed into it with a wide spatula. The mesh with a small cell keeps perfectly in the solution. Then this first layer should dry, grab. And the last, finishing layer, made with the same plaster composition, finally levels the surface.

Brief overview of plaster meshes

There are a lot of stucco meshes, and new ones are appearing, from a variety of materials. Gone are the days when there was only one way to reinforce plaster on the wall and ceiling - wood shingles. It also happened that they stuffed nails and pulled wire over them. But modern expanded and woven steel meshes, with and without galvanization, are undoubtedly stronger and more technologically advanced at times.

Plastic plaster meshes

They are used not only for plaster, but also for brick and block masonry with the same purpose - reinforcement. The strength of the meshes fully provides reinforcement to the masonry - the meshes have high tensile strength. The material is polymers, the cell is usually 5 * 5 mm, the release form is rolls. Technological, light in weight, and easy to cut, but very strong. Suitable for plaster layers with a small thickness - up to 20 mm.

Polyurethane plaster mesh with fine mesh

Universal, suitable for both walls and ceilings, for reinforcing thin layers from mortars of any composition. Cell up to 6*6 mm. Grids with a cell up to 15 * 15 mm are considered average.

Large polyurethane plaster meshes

They are used for mechanized finishing of large areas - warehouses, hangars, facades of public and industrial buildings, etc. cell 20 * 20mm, 30 * 30 mm, 35 * 35 mm, mesh is produced in rolls.

Fiberglass plaster mesh

In terms of strength, it has better characteristics than plastic meshes, withstands significant breaking forces. Another advantage that many types of plastics do not have is that fiberglass is completely chemically inert, and the temperature range of its application is practically unlimited.

Classification of fiberglass plaster meshes

Fiberglass meshes are divided into groups according to density - the higher the density in g / cm2, the stronger the reinforced layer.

For internal plastering, painting and plastering fiberglass meshes are used. The name painting speaks for itself - this type of mesh is the lightest and thinnest, with a density of approximately 45-55 g / cm2. The cell is small - 2*2 mm, 3*3 mm. Plaster nets for interior decoration have a higher density - up to 180 g / cm2 and a cell of 4 * 4 mm, 5 * 5 mm.

Fiberglass mesh for exterior decoration and facades. Density from 180 to 220 g / cm2, cells 5 * 5 mm - 10 * 10 mm.

Fiberglass mesh for plaster on the plinth

In addition to the plinth itself, they are also used for its part covered with soil. And also for plastering underground structures and elements. Very strong and dense nets, for extreme working conditions and heavy loads, are anti-vandal building materials. The price is much higher than for thin meshes. Density up to 300 g / m2, and this is not the limit. The mesh markings indicate the density and tensile strength, as well as the purpose of the mesh.

A feature of fiberglass is its weak resistance to alkaline environments. The main building finishing solutions are alkaline - they are classified as weak and medium alkali. Therefore, all fiberglass meshes undergo a special treatment - impregnation with polyacrylic dispersions. The result is long-term protection. Unprotected fiberglass cement mortar is able to dissolve, "eat" for a period of approximately from several months to several years.

Fiberglass meshes are produced both in rolls and in tapes with different widths. It is possible to buy them with a canvas, usually a meter wide, and even with ready-made fasteners from corners - for reinforcing horizontal and vertical corners. Tapes are used for finishing plasterboard and gypsum plasterboard cladding, and for other surfaces made of panels, sheets or blocks, including foam plastics and expanded polystyrenes.

Fiberglass meshes are used not only for plastering surfaces and strengthening joints between walls and blocks of windows, doors, ventilation ducts, etc. very popular.

Steel mesh for plaster

There are many types of metal wire meshes. Cell sizes are different, usually up to 50 mm. Steel meshes are intended not only for reinforcing the plaster layer, but also for strengthening walls. Steel mesh is used very widely - both indoors and outdoors, for reinforcing and decorating surfaces made of reinforced concrete and lightweight concrete, brick and stone.

Metal Woven Plaster Mesh

It is carried out by the method of weaving from wire, like fabrics from threads - twill and linen. The cells are small, from 2 * 2 mm to 15 * 15 mm, the release is rolls of a meter or 1.5 meter width. The wire is used galvanized and stainless, less often - black.

By strength, woven metal meshes are divided into light, medium or heavy, depending on the thickness of the wire used. The main wire diameters are from 0.32 mm to 0.8 mm, less often 1 and 1.2 mm.

Rabitz

They also produce galvanized, and with colored polymer coatings. They are used not only in the construction of fences, partitions or screens. To strengthen adobe and clay walls for plastering, an elastic Rabitsa with a high relief is indispensable. The cells hold large volumes of plaster, creating a monolith of reinforcing and finishing layers, and the Chain-link itself is easily attached to the wall surface.

Welded metal mesh for plaster

Produced in black, galvanized and with polymer coatings. They are used not only for masonry, concrete screeds and foundations, but also for strengthening structures with a thick layer of thermal insulation and for finishing surfaces under load.

It can be used both for walls made of stone, brick and concrete, as well as for wooden surfaces, with a thick layer of plaster, uneven walls and for loaded surfaces. Welded meshes have a huge range of applications, cells from 5 * 5 to 100 * 100 mm, other sizes are possible, the wire thickness is usually up to 3 mm. Release - depends on the thickness of the steel, coils or sheets.

Mesh with galvanization and heat treatment

For plaster, a special type of plaster mesh is also produced - with galvanization and heat treatment. Nets are designed to distribute and hold solutions on vertical surfaces without loss. Cells from 10 mm to 100 mm, many standard sizes of grids with rectangular cells. Issue - rolls and sheets, depending on the diameter of the wire.

Perforated - exhaust plaster meshes

They are produced both wicker and from solid metal sheets with a thickness of 0.5-1.0 mm by drawing and notching the sheet. They are widely used, including under plaster, along with welded meshes and chain-link mesh. They perform the tasks of holding and cohesion of the finishing layers, their hardening and significantly increase the resistance to cracking during shrinkage of buildings.